It does, but there is less lag and improved range if you fly in airplane mode. I was dissapointed with only 15-20m distance before Tello becomes less responsive so I tried in airplane mode and it is better. Waiting for a repeater hoping it will increase the range even further.
Gamevice for iPhone 7/8/X
iPhone 8, iOS 11.3.1
Tello firmware 01.03.33.01
Tello app version1.1.12
Wired controller so no lag whatsoever, been using it for some time as a PS4 remote play device, works just as smooth with Tello